We pioneered the 1x drivetrain, and the SRAM Force 1 crankset evolves the innovation. It's lighter, stronger and simpler?non-aero chainrings can now be installed with a single tool. For cross, TT, tri and crits, this is the king of 1x.48t variant has direct mount aero chainrings for better aerodynamicsNon-aero chainrings can be installed with a single tool, making gearing changes a breezeSRAM X-SYNC wide-tooth, narrow-tooth chainring technology provides maximum chain controlCan be upgraded to a power meterSpeeds: 12BB Compatibility: GXPChainring Size: 4T, 46TCrank arm length: 165mm, 1675mm, 17mm, 1725mm, 175mm